>> Mexico is failing to stop a steady stream of Central American migrants traveling across its borders to the United States causing major concern in Washington. Mexico vowed to strengthen its southern crossing in 2014 when a surge in child migrants sparked a US political crisis. But fewer Central Americans have been captured in Mexico this year even as the number caught on the US border has jumped sharply.
The US Department of Homeland Security now is considering sending more agents south. Reuters correspondent Gabriel Stargardter traveled to Mexico's border with Guatemala.>> We know through documents that we've managed to get hold of that they are looking at maybe sending down further support staff here to try and help out Mexican migration authorities, train them through mentorships.
And one thing that we know there are Americans here, people we've spoken to have seen them, they see them at detention centers, they see them helping out. They're told by the Mexicans who deny they're Americans. They're told by them that they're not in fact American, but rather northern Mexicans, and that's why they're tall and blond.
However, no one really believes that.>> Behind the surging migrants, a regional drought and fear that if Donald Trump wins the White House, he will follow through on his campaign promises and build a wall. Mexico can't keep up with the rush of people coming across its borders. An international migration expert told Reuters that while the United States adds about 1,000 new agents along the Mexican border each year, Mexico's National Immigration Institute, or INM, has stopped replacing officials who retire or are fired.
INM has nearly 5,000 employees compared with US border patrol, which has roughly 60,000 agents. Mexican officials say there's another reason why they're catching fewer migrants. So-called coyotes have adapted to tightened border controls, adding new routes to skip the beefed up Mexican checkpoints.